Symmetries, variational principles, and quantum dynamics by J. Manjavidze, A. Sissakian

“…These properties of new quantization scheme are vitally essential for such theories as the non-Abelian Yang-Mills gauge theory and quantum gravity.…”
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Noncommutative Relativistic Spacetimes and Worldlines from 2 + 1 Quantum (Anti-)de Sitter Groups by Ángel Ballesteros, N. Rossano Bruno, Francisco J. Herranz

“…Furthermore, quantum (anti-)de Sitter algebras are presented both in the known basis related to 2 + 1 quantum gravity and in a new one which generalizes the bicrossproduct one. …”
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A holographic perspective on the axion quality problem by Peter Cox, Tony Gherghetta, Minh D. Nguyen

“…However, the axion solution relies on the spontaneous breaking of a global U(1)PQ symmetry, which is also explicitly violated by quantum gravity. To preserve the axion solution, gravitational violations of the U(1)PQ symmetry must be suppressed to sufficiently high order. …”
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Enumerating 6D supergravities with T ≤ 1 by Yuta Hamada, Gregory J. Loges

“…We also study which and how many models in this ensemble satisfy several UV and swampland bounds which have been proposed and previously utilized to great effect, finding that none are ruled out for T = 0 and ≈ 50% are inconsistent with quantum gravity for T = 1.…”
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Gravitational Waves from Black Hole Emission by Tousif Islam, Gaurav Khanna, Steven L. Liebling

“…While such scenarios are forbidden in general relativity (GR), alternative theories (such as certain quantum gravity scenarios obeying the weak gravity conjecture, white holes, and Hawking radiation) may allow them. …”
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EGUP corrected thermodynamics of RN-AdS black hole with quintessence matter by Baoyu Tan

“…This work contributes to the understanding of the interplay between fundamental physics and the macroscopic properties of black holes, offering a novel perspective on the thermodynamics of RN-AdS black holes in the context of quintessence and quantum gravity corrections. More importantly, we found that, unlike in the case of the Reissner-Nordström (RN) black hole, the qualitative behavior for the RN-AdS black hole with quintessence remain largely unchanged, except for minor differences, at the equation of state parameters ωq=−1/3 and ωq=−2/3. …”
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Unitarization of the one-loop graviton-graviton scattering amplitudes and study of the graviball by J.A. Oller, Marcela Peláez

“…From the graviton-graviton scattering amplitudes calculated perturbatively in quantum gravity to the one-loop order, we develop further a formalism that allows one to calculate infrared-finite partial-wave amplitudes fulfilling perturbative unitarity. …”
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Rips and regular future scenario with holographic dark energy: a comprehensive look by I. Brevik, Maxim Khlopov, S. D. Odintsov, Alexander V. Timoshkin, Oem Trivedi

“…Holographic dark energy (HDE) presents a very interesting approach towards addressing late-time acceleration, presenting an intriguing interface of ideas from quantum gravity and cosmology. In this work we present an extensive discussion of possible late-time scenarios, focusing on rips and similar events, in a universe with holographic dark energy. …”
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Factorization of the Hilbert space of eternal black holes in general relativity by Vijay Balasubramanian, Ben Craps, Juan Hernandez, Mikhail Khramtsov, Maria Knysh

“…Abstract We generalize recent results in two-dimensional Jackiw-Teitelboim gravity to study factorization of the Hilbert space of eternal black holes in quantum gravity with a negative cosmological constant in any dimension. …”
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Quasi-Classical Gravity Effect on Neutrino Oscillations in a Gravitational Field of a Heavy Astrophysical Object by Jonathan Miller, Roman Pasechnik

“…We demonstrate that such an essentially quantum gravity effect may have strong consequences for neutrino oscillation phenomena in astrophysics due to relatively large scattering cross sections of relativistic neutrinos undergoing large angle radiation of energetic gravitons in gravitational field of a classical massive source (i.e., the quasi-classical case of gravitational Bethe-Heitler scattering). …”
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Initiating the Effective Unification of Black Hole Horizon Area and Entropy Quantization with Quasi-Normal Modes by C. Corda, S. H. Hendi, R. Katebi, N. O. Schmidt

“…Black hole (BH) area quantization may be the key to unlocking a unifying theory of quantum gravity (QG). Surmounting evidence in the field of BH research continues to support a horizon (surface) area with a discrete and uniformly spaced spectrum, but there is still no general agreement on the level spacing. …”
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Approximate symmetries and gravity by Sylvain Fichet, Prashant Saraswat

“…Such a proposal can be seen as part of the “swampland” program to constrain EFTs emerging from quantum gravity. Considering an EFT perspective, we formulate a con- jecture which requires the existence of operators violating global symmetry and places quantitative bounds on them. …”
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Density of states, black holes and the Emergent String Conjecture by Alek Bedroya, Rashmish K. Mishra, Max Wiesner

“…Abstract We study universal features of the density of one-particle states ρ(E) in weakly coupled theories of gravity at energies above the quantum gravity cutoff Λ, defined as the scale suppressing higher-derivative corrections to the Einstein-Hilbert action. …”
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Inflation models with Peccei–Quinn symmetry and axion kinetic misalignment by Hyun Min Lee, Adriana G. Menkara, Myeong-Jung Seong, Jun-Ho Song

“…Assuming that the PQ symmetry is explicitly violated in the scalar potential by quantum gravity effects, we show that a sufficiently large initial axion velocity can be obtained before the QCD phase transition while avoiding the axion quality problem. …”
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Quantum-Ordering Ambiguities in Weak Chern—Simons 4D Gravity and Metastability of the Condensate-Induced Inflation by Panagiotis Dorlis, Nick E. Mavromatos, Sotirios-Neilos Vlachos

“…We argue in favor of a physical importance of such imaginary parts, which we compute to second order in the GW (tensor) perturbations in the framework of a gauge-fixed effective Lagrangian, within a (mean field) weak-quantum-gravity-path-integral approach. We thus provide estimates of the inflation lifetime. …”
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Hawking-Page transition in 4D Einstein-Gauss-Bonnet gravity by Xiao-yan Hu, Yuan-zhang Cui, Wei Xu

“…These advancements hold promise for deepening insights into black hole thermodynamics in the framework of quantum gravity.…”
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End of the world brane dynamics in holographic 4d N $$ \mathcal{N} $$ = 4 SU(N) with 3d N $$ \mathcal{N} $$ = 2 boundary conditions by Jesús Huertas, Angel M. Uranga

“…We explore the interplay of bulk and boundary topological couplings and draw general lessons for the classification of cobordism defects of bulk quantum gravity theories in the swampland program.…”
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Modified Heisenberg Commutation Relations, Free Schrödinger Equations, Tunnel Effect and Its Connections with the Black–Scholes Equation by Mauricio Contreras González, Roberto Ortiz Herrera, José González Suárez

“…Further, because this random geometry is nothing more than gravity at the microscopic level, the Black–Scholes equation becomes a possible simple model for understanding quantum gravity.…”
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